After 2.0 years, the 4.0 mg sample decays to 2.0 mg.
After another 2.0 years (total 4.0 years), the 2.0 mg sample decays to 1.0 mg.
And after another 2.0 years (total 6.0 years), the 1.0 mg sample decays to 0.50 mg.
So it takes 6.0 years for 4.0 mg to decay to 0.50 mg.
It takes for a 4.0 mg sample of X to decay and have only 0.50 mg of it remain is 6 years.
What is half-life?It is the continuous disintegration of the matter by the emission of highly penetrating radiation associated with the nucleus.
Given
The half-life of isotope X is 2.0 years.
How to find the years would it take for a 4.0 mg sample of X to decay and have only 0.50 mg?The half-life of isotope X is 2.0 years.
Mass Time period
4.0 mg 0
2.0 mg 2
1.0 mg 4
0.5 mg 6
Thus, 6 years would it take for a 4.0 mg sample of X to decay and have only 0.50 mg of it remain.
More about the half-life link is given below.
https://brainly.com/question/24710827
6/4 as a whole number or a mixed nimber
Answer: 1 2/6 which needs to be simplify which is 1 1/3.
We can see here that 6/4 as a mixed number is = 1 (1/2).
What is mixed number?A mixed number is a representation of a number that includes both a whole number and a fraction. It consists of an integer part and a fractional part. The integer part represents a whole number, while the fractional part represents a proper fraction.
To express 6/4 as a mixed number, you divide the numerator (6) by the denominator (4) and express the remainder as a fraction with the same denominator. In this case, 6 divided by 4 is 1 with a remainder of 2. So, 6/4 can be written as the mixed number 1 (2/4), which can be simplified to 1 (1/2).
Learn more about whole number on https://brainly.com/question/9879870
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Solve for x in the diagram below
Answer:
[tex]x=6^o[/tex]
Step-by-step explanation:
we know that
[tex]5x^o+(x+54)^o=90^o[/tex] -----> by complementary angles
solve for x
[tex]6x=90-54\\6x=36\\x=6^o[/tex]
I need the answer quick
-1 1/3 -> -1.3
Decimal Form: −1.3
Convert the fraction to a decimal by dividing the numerator by the denominator.
1/6 -> 0.16
Decimal Form: 0.16
what number will make 3/4 x 7/8 = 7/8 x true?
Answer:
3/4
Step-by-step explanation:you divide both sides by 7/8, so x=3/4.
Answer:
3/4
Step-by-step explanation:
Given
3/4 x 7/8
Multiply through
21/32
Divide by 7
3/4
the center of the circle is at (5, 5). what is the circumference? PLZ HELP!!
Answer:
Can I know the units to this and what does the (5,5) represent? Like it's a dot on a coordinate plane or something else?
Step-by-step explanation:
KNOWLEDGE CHECK!!!ALEKKSSSS
Answer:
2,5
Step-by-step explanation:
Add three
Find an equation for the line with the given properties. Express your answer using either the general form or the slope intercept form of the equation of a line. parallel tot he line x=16; containing the point (-3,3)
Answer:
Step-by-step explanation:
The number of applicants to a university last year was 11,450. This year, the number of applicants grew by 2%. How many applicants are there this year?
11,679
13,740
20,610
23,900
Answer:
11679
Step-by-step explanation:
Increased by 229
First you need to find the 2%
So to find the 2%
2/100 * 11450=229
Now add 11450+229= 11679
Answer:
11,679
Step-by-step explanation:
Start off making the 2% into a decimal so you can multiply it with the full amount of applications for the year before. 2% in decimal is .02 because you move the decimal twice to the left. Now that you have .02, multiply it by 11,450. (11,450)*(.02) which should be 279. Now you have to add the 279 to the 11,450 because they were admitted as well. (11,450+279)= 11,679
please help with geometric mean!!
The exact value of y is [tex]4\sqrt{3}[/tex].
Solution:
The attached below shows how the formula is written.
Using geometric mean,
Total base length (p + q) = 8
q = 6
p = 8 – 6 = 2
Let us first find the height of the triangle.
[tex]h^2=pq[/tex]
[tex]h^2=2\times6[/tex]
[tex]h^2=12[/tex]
Taking square root on both sides,
[tex]h=\sqrt{12}[/tex]
Using Pythagoras theorem,
In right triangle, square of the hypotenuse is equal to the sum of the squares of the other two sides.
[tex]y^2=(\sqrt{12})^2+6^2[/tex]
[tex]y^2=12+36[/tex]
[tex]y^2=48[/tex]
[tex]y=4\sqrt{3}[/tex]
The exact value of y is [tex]4\sqrt{3}[/tex].
The probability of getting a 4- bedroom home with a open porch based off the table.
If the side of square is 1/5 inches. Then what is the area of the square?
Answer:
1/25
Step-by-step explanation:
1/5*1/5=1/25
because lenght times width equals area
The scale on a map is 1 cm for every 600 km. If Seattle and Maine are 10 cm apart on the map, then approximately how far apart are they really?
Answer: 6000 km
Step-by-step explanation:
600 x 10
6000
When multiplying by 10 you add a zero to the end.
Answer:
6,000
Step-by-step explanation:
I think I'm not sure but if for every 1cm=600km then you multiple
1cm=600km
10cm=6,000km
Which expression is equivalent to (4+3i)^2+(6-I)^2
Answer:
[tex]\large\boxed{(4+3i)^2+(6-i)^2=42+12i}[/tex]
Step-by-step explanation:
[tex](4+3i)^2+(6-i)^2\qquad\text{use}\ (a\pm b)^2=a^2\pm2ab+b^2\\\\=4^2+2(4)(3i)+(3i)^2+6^2-2(6)(i)+i^2\\\\=16+24i+9i^2+36-12i+i^2\qquad i=\sqrt{-1}\to i^2=-1\\\\=16+24i+9(-1)+36-12i+(-1)\\\\=16+24i-9+36-12i-1\qquad\text{combine like terms}\\\\=(16-9+36-1)+(24i-12i)\\\\=42+12i[/tex]
Choose the constant that could be multiplied by each equation to create a system of equivalent equations with opposite terms.
2x + 3y = 1
5x + 2y = 8
The first equation can be multiplied by 5 and the second equation by 2.
The first equation can be multiplied by –5 and the second equation by –2.
The first equation can be multiplied by –5 and the second equation by 2.
Answer:
I think it's the third one. Because it will make both equation's x a opposite value (one is positive and one is negative).
Step-by-step explanation:
Because 2x+3y=1*5= 10x+15y=5 and then 5x+2y=8*-2 = -10x+4y=-16 both equations will cancel the Xs out and then you can solve for Y.
Answer:
The 3rd one
Step-by-step explanation:
Five times the sum of a number and 6 equals 3
Answer:
5x+6=3
Step-by-step explanation:
"A number" is a variable.
"Sum" is addition.
"Equals 3" is =3.
"and six" relates to "sum".
So when you put these together it would be 5x+6=3
Evaluate the expression?????
Answer: 15.6
Step-by-step explanation:
10. The physician ordered 3.75 mg of Warfarin sodium. Available are Warfarin 7.5 mg scored
tablets. How many tablets will you give?
Order these numbers from greatest to least: -4 , 1/4 , 0 , 4 , -3 1/2 , 7/4 , 5/4
Answer:-4, -3 1/2, 0, 1/4, 5/4, 7/4, 4
Step-by-step explanation: please give brainliest and thankyou
help me pls I've been waiting for an hour to get an answer I'm willing to sacrifice my points ...
Deidre goes out for lunch and realizes that she only has $10 with her. If she wants to leave a 20% tip and knows she will have to pay 5% tax on her lunch, what is the most expensive lunch she can order?
Answer:
I think it's probably 8$ Edit: 7.5$ i did the math wrong
Jose is driving to Denver. Suppose that the remaining distance to drive (in miles) is a linear function of his driving time (in
minutes). When graphed, the function gives a line with a slope of -0.95. See the figure below.
Jose has 48 miles remaining after 50 minutes of driving. How many miles were remaining after 34 minutes of driving?
Answer:
63.2 miles
Step-by-step explanation:
The given slope and point can let us use the point-slope form of the equation for a line:
y = m(x -x1) +y1
y = -0.95(x -50) +48
We want to find the value of y for x=34.
y = -0.95(34 -50) +48 = 63.2
Jose had 63.2 miles remaining after driving 34 minutes.
Rashad is paid time-and-a-half for any overtime he works weekly. He worked 10 hours overtime last week and earned $120. What is his regular hourly pay?
Answer:
$12 hourly
Step-by-step explanation:
120 ÷ 10 = 12
Which of the following statements is true? The value π is a rational number. The number 0 is a natural number. The number is an integer. The number -5 is a real number.?
Answer:
Actually, the other answer the other person put was incorrect.
Step-by-step explanation:
The reason for this being that the correct answer is actually "-5 is a real number". Most all numbers are real numbers, if you haven't gotten into complex numbers yet
Hope this helps even if it's really late, just know that the other answer somebody else put is incorrect.
Answer:
The number -5 is a real number.
Step-by-step explanation:
a number decreased by 7 is less than 4
Answer:
one example is 10
Step-by-step explanation:
10 - 7 = 3
3 < 4
Answer:
I believe it can be any number above 4
Step-by-step explanation:
because any number above 4 minus 7 is a number under 4
Find the slope between the
following points:
(11,-16) and (17,-9)
Answer:
m= [-16- (-9)]/(11-17)= (-16+9)/-6= -7/-6
the slope=7/6
Step-by-step explanation:
the slope is difference between y/ difference between x
2 A town park has two biking trails. Marsh Trail is 5 miles long, Woodland Trail is
25 miles long. How much longer is Marsh Trail than Woodland Trail?
A. 31
c. 733
D. 2 ²
Answer:
By 20 miles
It should be 20, since you are seeing how much apart is from Trail Marsh and Trail Woodland. Subtract 5 from 25, and you get 20
20% of a is 11, what is a
75% of b is 12, what is b
80% of c is 20, what is c
200% of d is 18, what is d
Answer:
20% of a is 11, what is a
a =55
75% of b is 12, what is b
b = 16
80% of c is 20, what is c
c = 25
200% of d is 18, what is d
d = 9
Step-by-step explanation:
20% of a is 11, what is a
20a = 1100
a =55
75% of b is 12, what is b
75b = 1200
b = 16
80% of c is 20, what is c
80c = 2000
c = 25
200% of d is 18, what is d
200d = 1800
d = 9
[tex] 8 \frac{7}{9} + 4 \frac{1}{8} [/tex]
Answer: 8 7/9 + 4 1/8 = 929 /72 = 12 65/72 ≅ 12.9027778
Step-by-step explanation:
Conversion a mixed number 8 7
9
to a improper fraction: 8 7/9 = 8 7
9
= 8 · 9 + 7
9
= 72 + 7
9
= 79
9
To find new numerator:
a) Multiply the whole number 8 by the denominator 9. Whole number 8 equally 8 * 9
9
= 72
9
b) Add the answer from previous step 72 to the numerator 7. New numerator is 72 + 7 = 79
c) Write previous answer (new numerator 79) over the denominator 9.
Eight and seven ninths is seventy-nine ninths
Conversion a mixed number 4 1
8
to a improper fraction: 4 1/8 = 4 1
8
= 4 · 8 + 1
8
= 32 + 1
8
= 33
8
To find new numerator:
a) Multiply the whole number 4 by the denominator 8. Whole number 4 equally 4 * 8
8
= 32
8
b) Add the answer from previous step 32 to the numerator 1. New numerator is 32 + 1 = 33
c) Write previous answer (new numerator 33) over the denominator 8.
Four and one eighth is thirty-three eighths
Add: 79
9
+ (33
8
) = 79
9
+ 33
8
= 79 · 8
9 · 8
+ 33 · 9
8 · 9
= 632
72
+ 297
72
= 632 + 297
72
= 929
72
For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of the both denominators - LCM(9, 8) = 72. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 9 × 8 = 72. In the next intermediate step the fraction result cannot be further simplified by cancelling.
In words - seventy-nine ninths plus thirty-three eighths = nine hundred twenty-nine seventy-seconds.
Answer: 12 65/72
Step-by-step explanation:
1) [tex]79/9+33/8[/tex]
Get your answer (as an improper fraction): [tex]929/72[/tex]
2) Turn [tex]929/72[/tex] into a mixed number and get 12 65/72
Identify the center and radius of each.
Step-by-step explanation:
The general equation of a circle with centre (h,k) and radius r
(x-h)²+(y-k)²=r²
Here, (x+5)²+(y-13)²= 10
=>{x-(-5)}²+(y-13)²=(√10)²
center: ( -5,13)
radius: √10
option C
The length of rectangle is 7.1 cm and breadth 2.5 cm what is the area of rectangle
Step-by-step explanation:
[tex]Area \: of \: rectangle \\ = lenght \times breadth \\ = 7.1 \times 2.5 \\ = 17.75 \: {cm}^{2} \\ [/tex]
How can you use a point on the graph of f –1(x) = 9x to determine a point on the graph of f(x) = log9x?
Answer:
Switch the x- and y-coordinates
Step-by-step explanation: